Title: typo in redis configuration docs

Description: > there is typo in https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/other_protocols/redis#redis-cluster-support-experimental
For topology configuration details, see the Redis Cluster v2 API reference.
url is given for v3 however it is written as v2 API

optional Relevant Links: https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/other_protocols/redis#redis-cluster-support-experimental

Any extra documentation required to understand the issue.